Plesionika

Ahamed, Ferdous, Cardoso, Irene A., Ahmed, Zoarder F., Hossain, Md. Y. & Ohtomi, Jun, 2017, An overview of the genus Plesionika Bate, 1888 (Decapoda, Caridea, Pandalidae) in Asian waters, Zootaxa 4221 (5), pp. 575-593 : 576

Occurrence of Plesionika spp. in Asian waters with their description

Plesionika species are caridean shrimps and can be characterized by both sides of the pleura of the second somite of the abdomen extending over the first and third somites, respectively. They have dorsal rostral teeth on the base of the rostrum and along the length of the rostrum dorsally or on both sides. The carapace is smooth or covered with a thin layer of minute scales. The claws of the first pair of pereopods are either microscopic, or absent. The carpus of the second pair of pereopods is subdivided into many articles. The 3rd maxilliped is bearing an exopodite ( Holthuis 1980). From Asian waters, 45 species have been reported so far ( Table 1), which can be distinguished based on several meristic characters. Brief notes on the taxonomy of Plesionika spp. recorded from Asian waters along with their taxonomic position are as follows (species are ordered alphabetically). Also a key for the 45 Asian Plesionika species is provided.

Sl. No. Species name Synonyms

1. Plesionika acinacifer Chace, 1985

2. P. adensameri (Balss, 1914) Parapandalus adensameri Balss, 1914 3. P. alcocki (Anderson, 1896) Pandalus alcocki Anderson, 1896 Plesionika adenensis Timofeev, 1993 4. P. albocristata Chan & Chuang, 2002

5. P. assimilis De Man, 1917

6. P. bifurca Alcock & Anderson, 1894

7. P. binoculus (Bate, 1988) Nothocaris binoculus Bate, 1888 8. P. brevirostris Bate, 1888

9. P. carsini Crosnier, 1986

10. P. crosnieri Chan & Yu, 1991 Plesionika dentirostris Tung, Wang & Li, 1988 11. P. edwardsii (Brandt, 1851) Pandalus (Parapandalus) longirostris Borradaile, 1900 Pandalus (Pontophilus) edwardsii Brandt, 1851 Pandalus guerinii Risso, 1844 Plesionika longirostris 12. P. ensis (Milne-Edwards, 1881) Acanthephyra ensis A. Milne-Edwards, 1881 Pandalus ensis (A. Milne-Edwards, 1881) 13. P. erythrocyclus Chan & Crosnier, 1997

14. P. fimbriata Chace, 1985

15. P. grandis Doflein, 1902 Plesionika spinipes var. grandis Doflein, 1902 16. P. heterocarpus (Costa, 1871) Pandalus heterocarpus A. Costa, 1871 Pandalus longicarpus A. Milne-Edwards, 1883 Pandalus sagittarius A. Milne-Edwards, 1883 17. P. hsuehyui Chan, 2004

18. P. hypanodon Doflein, 1902

19. P. indica De Man, 1917 Plesionika longipes var. indica De Man, 1917 20. P. intermedia Chace, 1985

21. P. izumiae Omori, 1971

22. P. kensleyi Chace, 1985

23. P. longicauda (Rathbun, 1901) Pandalus longicauda Rathbun, 1901 24. P. longidactylus Li & Komai, 2003

25. P. lophotes Chace, 1985

26. P. martia (Milne-Edwards, 1883) Pandalus martius A. Milne-Edwards, 1883 Plesionika (Pandalus) sicherii Riggio, 1900 Plesionika martia martia (A. Milne-Edwards, 1883) ......continued on the next page